the contiguous parts of the vortex. Consequently, in the solar vortex,
the density of the ether is directly as the square roots of the
distances from the axis. This is not the place fully to enter into a
discussion of the question, or to show that the position of each planet
in the system is due to the outstanding, uncompensated, portion of the
expulsive force of the radial stream, modified by the density of the
ether within the planets, and also by their own densities, diameters,
inclinations of axis, and periods of rotation. That Jupiter could not
remain in the orbit of Mercury, nor Mercury in that of Jupiter, by
merely exchanging periods and distances, but that each planet can only
be in equilibrio in its own orbit. That any change in the eccentricities
of the planetary orbits will neither increase nor diminish the action of
the radial stream of the vortex, and consequently will not interfere
with the law of gravitation. In relation to the numerous questions that
will spring up from such a position, it is sufficient here to say, that
it is believed all objections can be satisfactorily answered; while, by
this light, a long range of phenomena that have hitherto baffled the
sagacity of the wise, come out plainly, and discover their parentage.

In cometary astronomy we shall find much to substantiate these views.
The anomalies in their motions, the discrepancies in their periods,
calculated from different sets of observations, their nebulosities and
appendages, will all receive a satisfactory solution; and these lawless
wanderers of the deep be placed in a more interesting light.


TEST OF A THEORY.

It has been remarked that the best evidence of the truth of a theory, is
its ability to refer to some general principle, the greatest number of